Translation of puñalada

In the meantime I am listening to some Spanish CDs. They are intended for the car, but no one can tell you when to listen to it, how many times and how often. Please understand that I work a lot.
The other visitors in my group were from the United States, Canada, Germany and from other parts in Mexico. I need to say that it was so much fun to meet people and spend an entire trip with them.
As usually, we had problems with our hotel. At midnight we checked in to our place, and once seeing the room, my wife decided that she would not sleep there. She was right, it was a place with no atmosphere.